Tax procedure based on conditions

Hi all,

I came to know that tax procedure can be maintained either as condition based or percentage based like in case of India-TAXINJ and TAXINN. Could you please let me know where exactly we say that the tax procedure is condition or percentage based? Do we specify the calculation type for each condition type only or there is some indicator to specify it for the entire calculation procedure? I do see many tax codes created in the system without tax rates appearing in FTXP, though these tax codes are with 10% input tax etc. Please clarify.

Regards

Suresh